:root {
  --bg: #f7f8fa;
  --text: #111827;
  --muted: #5f6b7a;
  --line: #e5e7eb;
  --card: #ffffff;
  --accent: #111827;
  --soft: #eef1f5;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
}
.container { width: min(1120px, calc(100% - 40px)); margin: auto; }
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(247,248,250,.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; }
.logo { color: var(--text); text-decoration: none; font-size: 24px; font-weight: 800; letter-spacing: -.7px; }
.logo span { color: #6b7280; }
nav { display: flex; gap: 28px; }
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover { color: var(--text); }
.hero { padding: 110px 0 90px; background: linear-gradient(180deg,#fff 0%,#f7f8fa 100%); }
.hero-grid { display: grid; grid-template-columns: 1.35fr .65fr; gap: 70px; align-items: center; }
.eyebrow { font-size: 12px; letter-spacing: 2px; font-weight: 800; color: #6b7280; margin: 0 0 18px; }
h1 { font-size: clamp(42px, 6vw, 68px); line-height: 1.04; letter-spacing: -2.8px; margin: 0 0 24px; max-width: 780px; }
h2 { font-size: clamp(30px,4vw,44px); line-height: 1.12; letter-spacing: -1.5px; margin: 0 0 22px; }
h3 { font-size: 21px; margin: 8px 0 10px; }
.hero-copy { color: var(--muted); font-size: 18px; max-width: 700px; }
.actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 19px; border-radius: 8px; text-decoration: none; font-weight: 700; font-size: 14px; }
.primary { background: var(--accent); color: white; }
.secondary { border: 1px solid var(--line); color: var(--text); background: white; }
.hero-card, .card, .project {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
}
.hero-card { padding: 30px; box-shadow: 0 20px 50px rgba(17,24,39,.07); }
.card-label { font-size: 12px; letter-spacing: 2px; font-weight: 800; color: #6b7280; }
.hero-card h2 { font-size: 28px; margin-top: 35px; }
.hero-card p, .card p, .project p, .about-grid p { color: var(--muted); }
.stack { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.stack span, .tag { background: var(--soft); padding: 5px 9px; border-radius: 5px; font-size: 12px; font-weight: 700; }
.section { padding: 100px 0; }
.muted { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 42px; }
.card { padding: 28px; min-height: 230px; }
.number { font-size: 12px; font-weight: 800; color: #9ca3af; }
.projects { display: grid; grid-template-columns: repeat(2,1fr); gap: 18px; margin-top: 42px; }
.project { padding: 30px; }
.tech { font-size: 13px; font-weight: 700; color: #374151 !important; }
.note { font-size: 13px; color: #7a8491; margin-top: 22px; }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; }
.contact { padding-top: 70px; }
.contact-box { background: #111827; color: white; border-radius: 18px; padding: 48px; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.contact-box .eyebrow, .contact-box p { color: #c7ced8; }
.contact-box h2 { max-width: 700px; }
.contact-box .primary { background: white; color: #111827; white-space: nowrap; }
footer { border-top: 1px solid var(--line); padding: 25px 0; color: #7a8491; font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; gap: 20px; }
@media (max-width: 800px) {
  nav { display: none; }
  .hero { padding: 75px 0; }
  .hero-grid, .about-grid { grid-template-columns: 1fr; gap: 35px; }
  .cards, .projects { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .contact-box { flex-direction: column; align-items: flex-start; padding: 32px; }
  .footer-inner { flex-direction: column; }
}